In the following sentence, there are two blank spaces. Below the sentence, there are four pairs of words. Find out which pair of words can be filled up in the blanks in the sentence in the same sequence to make the sentence meaningfully complete.
In a changing and _________ unstructured business environment, creativity and innovation are being _________ demanded of executives.
In a changing and progressively unstructured business environment, creativity and innovation are being increasingly demanded of executives.